Steam-drying system for locomotive-boilers.



W. C. JACOBS. STEAM DRYING SYSTEM FOR LocomqTwE BOILERS.

APPLICATION FILED MAR. 13, i916.

Patented Sept. 5, 1916.

2 3HEETSSHEET 1 0000000000000000 0000000000000000 0000000000000 0000000000000000000 0000000000000000 0000000000000000 OOOOOOOOOOOOOOOO 0000lililllilfllililllillfi ll'lllilllllllmlilllll ATTORNEY W. C. JACOBS.STEAM DRYING SYSTEM FOR LOCOMOTIVE BOILERS.

APPLICATION FILED MAR. 13. 1916- PatentedSept. 5,1916.

2 SHEETSSHEET Z.

O o mw wm o o o owo o 0 A TTORNEY a vertical WILLIAM G. moons, orPALESTINE, ILLmoIs, ASSIGNOR or ONE-THIRD 'ro VIVIAN CARTER, orPALESTINE, ILLINOIS.

STEAM-DRYING SYSTEM FOR It0COIVlIOTIVE43011115138.

Specification of Letters Patent.

Patented se t. a, 1916.

Application filed March 13, 1916. Serial No. 83,921.

citizen 'of the United States, residing at- Palestine, in the county ofCrawford and State of Illinois, have invented certain new and usefulImprovements in Steam-Drying Systems for Locomotive-Boilers, of whichthe following is a specification.

The chief purpose of this invention is to provide the engines oflocomotives with superheated steam that will not only be superheated butheated to a point such that it will, be thoroughly dried.

The invention also contemplates such early and thorough heating of thesteam that there will be an immediate supply when the locomotive startsout on a trip instead of requiring several miles of travel under forceddraft before the drying of the steam becomes effective.

Another object of the invention is the provision of a boiler so designedthat thesuperheating unit maybe added without materially increasing thelength of boilers now manufactured.

Other objects and purposes of the invention will appear in the.disclosure thereof and to that end be it said the invention consists inthe structure of parts and in their combination and associationsubstantially as hereinafter set forth and claimed. The accompanyingdrawings form a part of this specification and in them Figure 1 islongitudinal medial section through a locomotive boiler embodying thisinvention. Fig. 2 is a vertical transverse section through the fire boxportion taken on the line 22 in Fig. 1. Fig. 3 is a like section throughthe barrel of the boiler seen in Fig. 1 taken on the line 33. Fig. 4isan elevation of the'bafiie sheet in the superheater of the dryingsystem shown in Fig. 1. Fig. 5 is a vertical longitudinal medial sectionof an ordinary locomotive boiler modified for the addition of thesuperheater of this invention. Fig. 6 is a vertical transverse sectionthrough the barrel of the boiler in Fig. 5'taken in line 6-6. Fig. 7 isan elevation of the baflie sheet in the superhcater shown in Fig. 5. 1

In the first four figures of the drawings 10 indicates the fire box withits arch 11 and door opening 12; while 13 indicates the barrel, 14 theforward smoke box with its door 15, exhaust steam nozzle 16,spark-arresting screen 17' and series of'petticoats 18 in line with thestack 19; and 20 indicates the steam dome from which leads the steampipe 21 to the superheater 22 with its steam dome 23, throttle box- 24and steam pipe 25 which conveys the superheated dry steam to the enginesof the locomotive, not shown.

The superheater 22 is located in the forward end of the barrel and togive it that space the flues 26 leading directly from the fire box areshortened, the forward flue sheet of the boiler being indicated at 27.

The heads of the superheater are indicated by 28 and 29 and locatedbetween and parallel thereto is a battle sheet 30 which extends downabout five sixths of the way from the top towardthe bottom. In saidheads the flues 31 are tightly secured in the usual manner but aresimply passed through holes in the baffle sheet with a snug fit. Theyare preferably located in alinement with the boiler flues. The steampipe 21 enters to the rear of the baffle sheet and the steam dome 20 islocated forward of said sheet.

To make up for the reduced heating surface due to shortening the flues"26 the crown sheet 32 is somewhat lowered and fiues'33 are locatedaboveit extending from the forward sheet 27 to the rear sheet 34.. Still moreflues as indicated at 35 are added above the flues 33 to assist inheating and drying the steam. Radial stays 36 from crown sheet to boilershell pass between the flues 33 and 35. A rear smoke box 37 isprovided'and has the usual doors opening into it the hinges of which arerepresented at 38.

Otherv features of the, structure and system will appear in thedescription of the routes of steam and products of combustion or gases.The gases from the fire box pass forward through flues 26 across thecompartment 39, between forward flue sheet 27 and the superheater, thenthrough flues 31 of the superheater to bafiie sheet 40 which directsthem around baflie plate 41 rearward through flues of the superheateracross com partment 39 between arched bridges 42 and 43 thence throughflues 33 into smoke box 37 whence on rounding baffle plate 44 they passforward through flues 35 the upper part the crown sheet, will passbetween the up:

permost flues 33 and the flues 35, which will begin the heating thereof,thence to steam dome 20 and through pipe 21 to superheater 22'down amongthe flues 31 thereof around baflle sheet 30 and up among the flues 31 tothe steam dome 23 to throttle box 24 thoroughly dried. From there itpasses to the engines at the will of the engineer.

In the compartment 39 a deflector 46 is located over flues 26 and is somounted as to serve as an adjustable draft-regulating baflie sheet. Thebridges 42 and 43 in said compartment are located as seen in Fig. 3between rows of flues and separate the respective banks 26, 33 and 35from one another.- They are preferably of any suitable refractorymaterial and may be held in place by channel or T-irons on the fluesheets 27 and 28. Said compartment is large enough to admit a workmanand is provided with a suitable manhole typified at 47. In the bafllesheet 40 in the forward smoke box is located a direct-draft damper 48.The

usual cinder hopper is located at 49 in the forward smoke box and a likehopper 50 is provided for compartment 39.

Instead of the usual petticoat pipe shown at 51 in Fig. 5 a number ofpetticoats 18 are shown in series in the preferred form of drying systemdepicted in Fig. 1. This series of petticoats, spaced apart axially,provides a number of lateral intakes for leading the gases from thesmoke box to the stack in response to the forced draft induced by theexhaust from nozzle 16. Thereby a greater degree of suction is exertedon the gases as they traverse the tripple path from the fire box to thestack.

The system outlined provides for early effective drying of the steam andfor raising it to the maximum degree of heat. If at times the steamshould prove too hot it may be cooled or reduced in temperature by meansof a valved bypass for cutting out the superheater 22. Such a bypass istypified in Fig. 1 in dotted lines at 52 with its lever-stemmed valve53.

The drying system simplified and applied to the standard locomotiveboiler is illustrated in Figs. 5 to 7. -Therein the flues 26 have beenshortened and the forward flue sheet 27 moved back sufficiently to allowthe insertion of the superheater 54 which slightly varies fromsuperheater 22 in not having flues through its upper part, the fluesthereof terminating at the level of those of tuted for the flues removedor omitted. In

this form also the inclosed steam pipe 56 passes through compartment 39in a downward direction and enters the first chamber of the superheaterjust above the flues thereof. A draft-regulating baflle 57 is also pro-Vided in the compartment 39, its position being controlled by means of acrank arm 58. A like crank arm 59is also provided for controlling theposition of the draftregulating sheet 46 in Fig. 1 and another 60 isprovided for controlling the damper 48 in baffle sheet 40. These severalcrank arms are connected with the cab by operating rods when the boileris mounted. The superheater in-both locations is preferably providedwith an automatic water trap depicted at 61 for drawing off water ofcondensation. In the latter adaptation of the drying system the steampasses from dome 20 through pipe 56, which traverses compartment 39,into the superheater 54 then down to the bottom thereof, around bafflesheet 62 and up to dome 23 and throttle box 24 whence its passage to theengines is controlled by the engineer.

While this invention has been described with reference to a locomotiveboiler it must be understood that it is not limited to that adaptationsince it may be incorporated with any other style of steam boiler.

The invention claimed is 1. The combination with a boiler, of asuperheater having flues parallel with the boiler flues and locatedtransversely of the barrel of the boiler in advance of the forward fluesheet and leaving a compartment between it and said flue sheet,partitions extending across said compartment for the purpose set forth,a regulable hinged baiile sheet in the lower part of said compartment, abaflle sheet forward of said superheater for returning the gases fromthe fire box toward the rear of the boiler, and a direct-draft damper insaid baflie sheet.

2. The combination with a boiler, of a superheater havingflues parallelwith the boiler flues and located transversely of the barrel of theboiler in advance of the forward flue sheet and leaving a compartmentbetween it and said flue sheet, a hinged draft-regulating baflie sheetin said compartment and means for swinging said baflle sheet.

3. In a steam drying system for locomotive boilers the combination withthe fire boiler flues extending from the fire b'ox'to 5.8a

the forward flue sheet, a set of fines above flues, and means fordirecting the gases from the crown sheet extending through the Water thefire box successively through said three space from the rear flue sheetto the forsets of boiler flues and thrice through the 10 Ward fluesheet, another set of flues extendsuperheater.

ing through the steam space from said rear In testimony whereof I haveaflixed my sheet to said forward sheet, a smoke box at signature.

the rear'fiue sheet for said last two sets of WILLIAM C. JACOBS.

